WWAIT WAIT WAIT WATI SO IS SPY SCOUTS DAD OR ISNT HE OR
Is the RED Spy the father of the BLU Scout? Is the BLU Spy the father of the RED Scout? How could the RED Spy be the RED Scout's father? Are both Spys and Scouts the same person? If it's the BLU Engineer that tracked down the Administrator, where is the RED Engineer? How do both of these teams of hired mercenaries that look the same exist at the same time?
DO they actually exist at the same time? Not according to this comic and the MvM trailer
But if Redmond and Blutarch hired the same mercenaries, but one mercenary/class cannot exist on the other team at the same time as the other, one of the two brothers would have won the Gravel War due to an advantage over the other team, rather than it being a never-ending stalemate